Enervative refers to something that has a weakening effect, causing a loss of energy and vitality. Antonyms for the word enervative include invigorating, stimulating, energizing, revitalizing, strengthening, and empowering. Invigorating is a synonym for enlivening and restoring energy. Stimulating refers to something that inspires or energizes, inducing a state of increased activity, motivation, or enthusiasm. Energizing is another close antonym that refers to something that supplies energy, power, or strength. Revitalizing pertains to the restoration of something to a healthier, more robust, or more vibrant state. Finally, strengthening and empowering are antonyms of enervative, indicating that something has a positive effect on one's physical or emotional strength, endurance, and resilience.